mirror of
https://github.com/matrix-construct/construct
synced 2024-07-05 10:08:36 +02:00
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_M_HOOK_H
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namespace ircd::m
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{
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template<class data = void> struct hook; // doesn't exist.
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template<> struct hook<void>; // base of hook system
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}
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template<>
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struct ircd::m::hook<>
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:instance_list<hook<>>
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{
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struct site;
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IRCD_EXCEPTION(ircd::error, error)
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json::strung _feature;
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json::object feature;
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m::event matching;
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std::function<void (const m::event &)> function;
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bool registered {false};
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size_t matchers {0};
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size_t calls {0};
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string_view site_name() const;
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site *find_site() const;
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bool match(const m::event &) const;
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public:
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hook(const json::members &, decltype(function));
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hook(decltype(function), const json::members &);
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hook(hook &&) = delete;
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hook(const hook &) = delete;
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virtual ~hook() noexcept;
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};
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/// The hook::site is the call-site for a hook. Each hook site is named
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/// and registers itself with the master extern hook::site::list. Each hook
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/// then registers itself with a hook::site. The site contains internal
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/// state to manage the efficient calling of the participating hooks.
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///
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/// A hook::site can be created or destroyed at any time (for example if it's
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/// in a module which is reloaded) while being agnostic to the hooks it
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/// cooperates with.
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struct ircd::m::hook<>::site
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:instance_list<site>
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{
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json::strung _feature;
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json::object feature;
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size_t count {0};
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string_view name() const;
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std::multimap<string_view, hook *> origin;
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std::multimap<string_view, hook *> room_id;
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std::multimap<string_view, hook *> sender;
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std::multimap<string_view, hook *> state_key;
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std::multimap<string_view, hook *> type;
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std::vector<hook *> always;
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std::set<hook *> hooks;
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friend class hook;
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bool add(hook &);
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bool del(hook &);
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void call(hook &, const event &);
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public:
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void operator()(const event &);
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site(const json::members &);
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site(site &&) = delete;
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site(const site &) = delete;
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virtual ~site() noexcept;
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};
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